View clinical trials related to Chiari Malformation.
Filter by:Chiari malformation corresponds to the herniation of cerebellar tonsils into the foramen magnum resulting in obstruction of cerebrospinal fluid circulation, which may eventually lead to the formation of an intramedullary cavity called syringomyelia. Chiari and syringomyelia can be responsible of variable symptoms, based on which neurosurgeons might propose surgical treatment. Yet, there is no properly developped and validated patient reported outcome measure (PROM) to assess the clinical severity of Chiari malformation and/or syringomyelia. The lack of such evaluation tool is a major issue to determine the optimal therapeutic strategy and to achieve a standardized and reproducible follow-up.
The research background of this study is that Chiari malformation (CM) is a congenital malformation in the foramen magnum region, often associated with syringomyelia, basilar depression, odontoid dislocation and other craniocervical junction deformities. The traditional surgical method for Chiari malformation with skull basilar depression is simple decompression without fixation, so it cannot effectively maintain the stability of the cervical spine and reduce the compression of the brainstem and cervical cord, often resulting in poor curative effect and aggravated symptoms. The cervical spine is the most flexible and most mobile part of the spine, and the instability of the cervical spine will directly affect the quality of life of patients after surgery. Subsequently, with the continuous advancement of technology and the continuous development and improvement of surgical methods, Investigators can relieve spinal cord compression by using atlanto-occipital decompression and dissection followed by C1/2 lateral arthrolysis combined with occipitocervical fusion. So, is this surgical combination the most effective surgery for patients with Chiari malformation and type II skull basilar depression? How should doctors adjust to the best surgical approach to treat patients with Chiari malformation and type II skull basilar depression? These questions have long puzzled neurosurgeons. By conducting this research, investigators hope that participants can participate in it, and work with them to answer this question, and jointly promote the development and progress of doctors' careers, while benefiting more patients.
Chiari Malformation (CM) is a chronic health condition characterized by brain and spinal malformations and displacements that cause obstruction of cerebrospinal fluid (CSF; Hadley, 2002) circulation. The most common type of CM, CM1, is characterized by the displacement of the cerebellar tonsils more than five millimeters into the foramen magnum (Hadley, 2002). Approximately 215,000 Americans may have CM1, over six times the prevalence of multiple sclerosis (Dilokthornsakul et al., 2016; Speer et al., 2003). Chronic pain is a major problem for patients with CM; (Curone et al., 2017; Garcia et al., 2019). Craniovertebral decompression is the most common surgical intervention for CM1, but it may not be effective in relieving long-term pain and is not recommended for all CM1 patients (Arnautovic et al., 2015; Imperato et al., 2011). In addition to chronic pain, patients with CM also have high levels of depression, anxiety, and sleep dysfunction (Garcia et al., 2019; Lázaro et al., 2018; Watson et al., 2010). Psychological interventions, specifically Acceptance and Commitment Therapy (ACT), have been effective at treating chronic pain when administered online (van de Graaf et al., 2021). We previously found an online self-administered version of ACT to be effective at improving psychological flexibility and chronic pain acceptance in participants with CM (Garcia et al., 2021). In our pilot study (Garcia et al., 2021), participants in the intervention group received phone coaching to improve intervention adherence and use of skills; however, we found that duration of phone coaching did not impact treatment outcomes. We also had excellent retention in the control group. It is unclear whether phone coaching is necessary for treatment engagement or efficacy in groups particularly motivated to seek treatment. If it is not necessary, online ACT can be offered more efficiently and cost-effectively. The proposed study will randomize participants to either ACT+ phone coaching, ACT without coaching, or wait-list control conditions to determine if coaching impacts treatment adherence and outcomes in this population. Based on power analyses, the sample size will be 111. The sample will be recruited online and randomized to one of the three treatment groups. The intervention will consist of eight modules that are administered weekly over 8 weeks. Follow up assessments will be administered after completion of the intervention, and at one and three months after completion.
The aim of this study is to collect systematically and proactively data regarding the performance of Neuro-Patch, like complications and handling, under daily clinical practice when used as intended by the manufacturer
Twenty percent of US adults report chronic pain symptoms. Both psychological symptoms and sleep issues commonly co-occur with chronic pain. Chronic pain is a frequently reported symptoms of Chiari Malformation (CM); however, the cause of pain symptoms is not fully understood, and pain is not associated with the extent of neural abnormality in CM. ACT is not a set of techniques, but rather a way of thinking. ACT encourages acceptance, as opposed to avoidance of unwanted feelings, all in the context of mindfulness (i.e., being aware of one's present environment and in tune with internal thoughts and emotions). ACT has been found to be successful at reducing pain perceptions and targeting multiple symptoms at one time. However, ACT has not been examined in CM and it is unknown whether ACT will improve sleep as well as pain-related symptoms. The purpose of the current study is to assess the efficacy of an online ACT intervention at reducing pain interference and sleep dysfunction symptoms in a sample with CM. It is hypothesized that CM patients may benefit from Acceptance and Commitment Therapy (ACT). More specifically it is hypothesized that the treatment group will report significantly less pain interference and psychological flexibility compared to the control group. It is also hypothesize that ACT will mediate the relationship between sleep dysfunction and pain interference. Based on power analyses the sample size will be 56. The sample will be recruited online and randomized to the treatment or control group. The intervention will consist of eight modules that are administered weekly over eight weeks. Additionally, a 7-day sleep diary will be administered the week prior to the intervention and the week after the intervention. Follow up assessments will be administered upon completion of the 8-week intervention (at the beginning of week 9), 1-month after, and 3 months after the completion of the intervention.
The purpose of this study is to evaluate the feasibility of a fetoscopic surgical technique for antenatal correction of fetal myelomeningocele. Two surgical approaches will be utilized. The percutaneous approach will be offered to participants with a posterior placenta. The laparotomy/uterine exteriorization approach will be offered to participants regardless of placental location.
Background: Obstructive sleep apnea (OSA) refers to the apnea and hypopnea caused by upper airway obstruction during sleep. Patients are associated with sleep disorders, frequent desaturation, hypertension, coronary heart disease, cerebrovascular disease and diabetes. OSA prevalence increased in China in recent years. It is estimated that nearly 80% of men and 93% of women are not diagnosed for moderate and severe OSA. Anesthesiologists and surgeons paid more attention on those high risk patients. The gold standard for OSA diagnosis is apnea and hypopnea index (AHI) obtained from polysomnography (PSG). But it is difficult to carry out PSG regularly in primary health care institutions in China for its high cost and long waiting list. So many OSA questionnaires are developed in Europe and North America, obesity is an important risk factor for OSA for them. But in China people have different anatomical characteristics, the diagnosis sensitivity and specificity of those methods has not been reported in China. Methods and Design: Participants for this study will be recruited in Beijing Tongren Hospital scheduled for elective surgery under general anesthesia. A total of 1200 adult male patients will be enrolled. It is including 3 kinds of persons. 1. To accept PSG monitor in sleep center. 2. To receive OSA correction surgery (UPPP). 3. To receive ophthalmological surgery under general anesthesia. Detailed inquiry and record all medical history. Upper airway assessment will be recorded. Preoperative snoring questionnaires will be integrated according to the four questionnaires. All patients complete PSG monitor. For patients undergoing surgical treatment, postoperative continuous pulse oximetry will be recorded for 24 hours. All postoperative adverse events will be recorded. The primary endpoint: All the patients complete the four snoring questionnaires (ASA, Berlin, STOP and STOP-BANG) before PSG test. The secondary endpoints: PSG monitor will be completed before operation. Medical history, upper airway assessment, postoperative 24 hours continuous pulse oximetry monitor and all perioperative adverse events will be recorded. The purpose is to compare the specificity and sensitivity of four questionnaires to figure out OSA. To find suspected OSA patients before operation with one easy-to-use assessment questionnaire and direct OSA clinical practice.
This research study is to find out which types of dural grafts used during surgery for Chiari Malformations are superior. We believe that autologous dural grafts are superior to non-autologous grafts.
The study evaluates two materials used for duraplasty of the posterior cranial fossa in treatment of Chiari malformation. One material (DuraGen) is a non-suturable collagen matrix that is applied over the defect if brain coverings (dura); the other (DuraGuard) is made out of bovine pericardium and has to be sutured during application. The study compares these two materials used for duraplasty of patients undergoing Chiari surgery in a prospective randomized fashion to check the rate of surgical complications associated with each material, patient's outcomes, length of surgery and the hospital stay, etc.